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Bosch LBD1938/00-480w Plena Booster Amplifier

(6 customer reviews)
BOSCH

The Bosch LBD1938/00 480W Plena Booster Amplifier is a high-power expansion amplifier designed for large public address systems. With 480W output, 100V and low-impedance compatibility, and Bosch’s advanced protection circuitry, it is perfect for demanding commercial, industrial, and public environments requiring strong and reliable audio distribution.

38,999.00 Excluding Tax

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Bosch LBD1938/00-480w Plena Booster Amplifier

The Bosch LBD1938/00-480w Plena Booster Amplifier is a high-capacity, professional-grade amplification unit engineered to expand and reinforce large-scale public address systems. With an impressive 480 watts of continuous power, it delivers exceptional audio clarity, long-distance coverage, and stable performance, even under demanding operating conditions.

Bosch LBD1938/00-480w Plena Booster Amplifier Designed for full compatibility with the Bosch Plena series, the LBD1938/00 is ideal for airports, malls, campuses, stadiums, industrial facilities, transport hubs, government buildings, and any large environment requiring consistent and powerful audio amplification.


🔹 High-Power 480W Output

The amplifier provides:

  • 480W continuous output for large distributed audio systems

  • 100V constant-voltage output for multi-speaker zones

  • 8Ω low-impedance output for direct speaker loads

This flexibility ensures seamless expansion of existing PA systems while maintaining high audio quality and coverage.


🔹 Seamless Integration with Bosch Plena Systems

The LBD1938/00 is designed to work perfectly with:

  • Plena mixer amplifiers

  • Plena preamplifiers

  • Plena voice alarm systems

It effortlessly increases system capacity, allowing installers to add more speakers, zones, or coverage areas without compromising performance.


🔹 Advanced Protection & High Reliability

Engineered for 24/7 operation, the amplifier includes multiple safeguards:

  • Short-circuit protection

  • Thermal protection

  • Overload protection

  • Limiter circuit to prevent distortion and protect connected speakers

Front-panel LED indicators provide clear visual feedback on system status, ensuring smooth operation in mission-critical environments.


🔹 Silent & Efficient Operation

With a fanless cooling design, the amplifier delivers:

  • Noise-free performance

  • Reduced heat build-up

  • Long service life

  • Low maintenance requirements

This makes it ideal for quiet environments such as hospitals, conference centres, and control rooms.


       Key Features

  • Powerful 480W continuous output

  • Supports 100V and operation

  • Seamless expansion for Plena PA systems

  • Advanced protection (thermal, overload, short circuit)

  • Front-panel LED indicators

  • High-efficiency, silent, fanless design

  • Suitable for very large installations

  • Trusted Bosch reliability


       Ideal Applications

  • Airports & railway stations

  • Universities & campuses

  • Shopping malls & hypermarkets

  • Industrial & manufacturing facilities

  • Large office buildings

  • Hospitals & healthcare facilities

  • Stadiums & sports arenas

  • Government & public service buildings

  • Emergency and evacuation systems

 

LBD1938/00

Brand

Technical specifications

Electrical

 

LBD1938/00
Power supply
Input Voltage 230VAC ±10% at 50/60Hz or

24VDC

Inrush Current 19A at 230 VAC, 30A at 24 VDC
Performance
Rated Output (RMS) 480W
Power reduction on backup power -1 dB
Frequency response 60 Hz to 18 kHz (+1 / -3 dB at

-10 dB ref. rated output)

Distortion <1% at rated output, 1 kHz
S/N (flat at max volume) > 90 dB
Power consumption
Max power consumption 1600 VA
Mains operation
Max power 990W
-3 dB 715W
Pilot tone 110W
Idle 25W
24V DC operation
Max power 32A (770W)
-3 dB 26A (625W)
Pilot tone 3.8A (91W)
Idle 0.7A (17W)
Line Input s 2 x
Connector 3-pin XLR, balanced
Sensitivity 1 V
Impedance >20k ohm
CMRR >25 dB (50 Hz to 20 kHz)
Gain 40 dB
100 V input
Connector Screw, unbalanced
Sensitivity 100 V
Impedance 330k ohm
Line l oop through output 2 x
Connector 3-pin XLR
Nominal level 1V
Impedance Direct connection to line input
Loudspeakers outputs 3 x
Connector Screw, floating
Direct output 100 V, 70 V, 8/4 ohm
Priority only (from input 1) 100V/70V internally selectable
Music (non-priority) only 100V/70V internally selectable
Dimensions (H x W x D) 145 x 430 x 370 mm
Weight 25 kg
Color Charcoal
Mounting 19″ rack, 3U height
Operating temperature -10 ºC to +45 ºC
Storage temperature -40 ºC to +70 ºC
Relative humidity <95%
Acoustic noise level of fan <48dB SPL at 1m(max output)

Based on 6 reviews

4.2 overall
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  1. Raj

    The product is awesome… design and build quality is superior and class above.. and the sound is also very good..you will get more than what you pay.. highly recommended… fully satisfied..

    Raj

  2. selvakumar

    Its too good sound qulity so good BOSCH Amplifire is no1 braend. Thanks to Sakthi AV Tronics

    selvakumar

  3. suneil wadhwa

    Amazing product at reasonable price. Happy with this one

    suneil wadhwa

  4. naseer

    Nice product genuine seller

    naseer

  5. Collin

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